| Acronym | Definition |
|---|
| UDIA➣Urban Development Institute of Australia |
| UDIA➣Urban Development Industry Association (Canberra, Australian Capital Territory, Australia) |
| UDIA➣Utah Division of Indian Affairs (est. 1953) |
| UDIA➣Urban Design Institute of Australia |
| UDIA➣University District Improvement Association (now Marcy-Holmes Neighborhood Association; Minnesota) |
| UDIA➣University District Interfaith Alliance (Seattle, WA) |